A bill to amend the Clean Air Act to provide for further assessment of the validity of the theory concerning depletion of ozone in the stratosphere by halocarbon compounds before proceeding with any further regulation of such compounds, to provide for needed further research and study, and for other purposes.

[AI summary unavailable — showing source text] Amends the Clean Air Act to direct the Administrator of the Environmental Protection Agency to: (1) continue ozone protection studies and research while increasing actual measurements of stratospheric ozone and improving methods of monitoring potential trends in such measurements; and (2) contract with the National Academy of Sciences, in consultation with the Administrators of the National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration, to (a) continue review and research, (b) determine the extent, nature, and causes of changes in stratospheric ozone concentration (with particular attention to the effects of chlorofluorocarbons), (c) investigate unreasonable effects on health and the environment, and (d) report to the Administrator and the Congress. Directs the Administrator to report, with recommendations, to the Congress at the end of a 24-month period. Prohibits the commencement or continuation of rulemaking by the Administrator with respect to regulations for the control in the United States of any chlorofluorocarbon until: (1) the Administrator, the Academy, and the President have submitted specified reports to the Congress; or (2…